How to reach my pc gaming goal?

[Azurumi Shinji]

Hello, I am wanting to play games like titanfall2 , the division , bf4 and overwatch with ultra settings on a 1080P monitor @ 144fps.

Currently my oldest part is a gtx 680 4GB and it plays all games at 144fps if I keep all settings at super low or 60 fps on high settings.
Is that abnormally good for a gtx 680?
My other pc parts are...
I76700k (water cooled), 16GB DDR4 OC evga ram, evga z170 classified k MOBO, Intel 730 ssd in a hafX case.

So I thought a gtx 1080 would easily help me reach my goal and future proof me...but all the benchmarks I see seem to hit 90-130 about and even the 1080 TI seems to be barely hitting what I want.
I don't wanna believe it's that hard to get what I want lol...

So basically, how do I get my rig good enough for what I desire? What would the bottle neck be if I had a evga gtx 1080? Better cpu? More ram?
I seen a video of some one playing it @ 1440P and 165fps!

P.S I think my mobo sucks at sli from what I hear , I read it's too small and cramped for two cards since it squishes them together.
I always been to scared to sli because of that and am trying to do this with one gpu.

 

[jwcrellin]

1080ti just came out, its 30% faster than the 1080. That's the one you want.

 

[rolli59]

Your rig looks good apart from your old GPU which is ready to be upgraded. http://www.tomshardware.com/reviews/gpu-hierarchy,4388.html

 

[sizzling]

What overclock do you have on your CPU? This really helps with high fps.

 

[Azurumi Shinji]

What overclock do you have on your CPU? This really helps with high fps.

No overclock yet, since it is pointless atm. But once I get a new GPU I will if its needed for the goal of mine. Im guessing I have to overclock since the cpu is my bottle neck? Is that correct?
I am also thinking of swapping my cpu for a 7700k, but I dont think my motherboard has a bio's update for it.

 

[Azurumi Shinji]

1080ti just came out, its 30% faster than the 1080. That's the one you want.

I know its the best but even that card on the benchmarks sites isnt hitting what I want or at best it BARELY hits what I want and that isnt considered stable I think.
I also really want to do this with just a normal GTX 1080 and I wish to know if its possible to do that.

 

[rolli59]

A normal 1080 will not hit 1080Ti levels which is currently the best card on the market, it will though be considerable upgrade from the 680.